This may not work any more for i found it in 2.3.3. Anyway Lets say your a lvl 38 Horde character. You want to get in to Scarlet Armory for the armor and weps. But none u find has a key. well instead of killing the boss for one all you have to do is head in to Scarlet Monastery or graveyard. Aggro everything you can and get killed. then walk up to the room with the instances, But DON"T ENTER THE ONE YOU DIED IN! Instead enter Scalet armory you'll run past or through the door blocking it and can enter the instannce. Then just exit once your alive and open the door for your friends. Makes life easier then going through 2 instances instead of one. Post any Q's if you need help or if it doesn't work in 2.4.3.